551544421203 has 12 divisors (see below), whose sum is σ = 809735526288. Its totient is φ = 361668472560.

The previous prime is 551544421159. The next prime is 551544421273. The reversal of 551544421203 is 302124445155.

551544421203 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 4 + 442 + 1 + 203 = 666.

It is not a de Polignac number, because 551544421203 - 2⁶ = 551544421139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551544421273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502316775 + ... + 502317872.

It is an arithmetic number, because the mean of its divisors is an integer number (67477960524).

Almost surely, 2^551544421203 is an apocalyptic number.

551544421203 is a deficient number, since it is larger than the sum of its proper divisors (258191105085).

551544421203 is a wasteful number, since it uses less digits than its factorization.

551544421203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004634714 (or 1004634711 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 551544421203 its reverse (302124445155), we get a palindrome (853668866358).

The spelling of 551544421203 in words is "five hundred fifty-one billion, five hundred forty-four million, four hundred twenty-one thousand, two hundred three".